The Hong Kong government on Wednesday canceled the passports of six overseas-based activists under the new national security law, stepping up its crackdown on dissidents who moved abroad. Those affected were former pro-democracy lawmaker Nathan Law, unionist Mung Siu-tat and activists Simon Cheng, Finn Lau, Johnny Fok and Tony Choi — all accused of endangering national security by the authorities. The government said they have “absconded” to the U.K.